GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 21 Jan 2019, 22:23

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winners of the GMAT game show

     January 22, 2019

     January 22, 2019

     10:00 PM PST

     11:00 PM PST

    In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
  • GMAT Club Tests are Free & Open for Martin Luther King Jr.'s Birthday!

     January 21, 2019

     January 21, 2019

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open January 21st for celebrate Martin Luther King Jr.'s Birthday.

In theory, the Habbendorf rotary engine could be a great racing engine

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
SVP
SVP
User avatar
V
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 2037
Location: Pakistan
GPA: 3.39
Premium Member CAT Tests
In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 24 Feb 2017, 22:29
4
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

28% (02:06) correct 72% (01:56) wrong based on 324 sessions

HideShow timer Statistics

Source: McGraw Hill GMAT

In theory, the Habbendorf rotary engine could be a great racing engine, but in practice, it is not. The reason is that the available fuels do not have sufficient octane to obtain maximum performance from the engine.

The answer to which of the following questions would be most relevant to evaluating the adequacy of the explanation given above for why the Habbendorf rotary engine is not a great racing engine?

A. If the Habbendorf rotary engine were to operate at maximum performance levels, how would its performance compare to that of an engine recognized as a great racing engine?
B. At what level of octane in its fuel does the Habbendorf rotary engine achieve maximum performance?
C. What levels of speed, acceleration, and efficiency must an engine display in order to be considered a “great racing engine”?
D. Could a Habbendorf rotary engine be modified so that it is able to achieve maximum performance with the fuels currently available?
E. If a car equipped with a Habbendorf rotary engine were to race against a comparable car equipped with a great racing engine, by how much would the performance of the great racing engine surpass that of the Habbendorf rotary engine?

_________________

Final days of the GMAT Exam? => All GMAT Flashcards.
This Post Helps = Press +1 Kudos
Best of Luck on the GMAT!!

Intern
Intern
avatar
B
Joined: 24 Feb 2017
Posts: 3
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 24 Feb 2017, 23:22
I think it's D which is evaluating the argument logically.


Sent from my iPhone using GMAT Club Forum
Intern
Intern
avatar
B
Joined: 20 Mar 2017
Posts: 10
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 16 Nov 2017, 09:58
Hi, can someone please post an explanation for this question?.... I am stuck.
Intern
Intern
avatar
B
Joined: 24 May 2017
Posts: 13
GMAT 1: 650 Q48 V31
Reviews Badge
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 18 Nov 2017, 05:55
I want to understand the logic of how should i eliminate each option in this question and arrive at the right answer.
Intern
Intern
avatar
B
Joined: 01 Feb 2017
Posts: 3
Location: India
GMAT 1: 690 Q47 V37
GPA: 4
Reviews Badge
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 21 Nov 2017, 00:49
Hi everyone..

Went for D...but on careful observation of A...it can be understood why A is correct.

A actually goes an extra step .
The basic is to compare the theoritical performance with actual...Then comes the reason
Option A notes that Habbendorf rotary engine at "maximum performance levels" if compared to "a great racing engine"(in which all the criteria required to consider a racing engine to be "great" has been taken care of) can clearly indicate how good Habbendorf rotary engine is.
BSchool Forum Moderator
User avatar
V
Joined: 28 Mar 2017
Posts: 1219
Location: India
GMAT 1: 730 Q49 V41
GPA: 4
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 24 Nov 2017, 01:05
SajjadAhmad wrote:
Source: McGraw Hill GMAT

In theory, the Habbendorf rotary engine could be a great racing engine, but in practice, it is not. The reason is that the available fuels do not have sufficient octane to obtain maximum performance from the engine.

The answer to which of the following questions would be most relevant to evaluating the adequacy of the explanation given above for why the Habbendorf rotary engine is not a great racing engine?

A. If the Habbendorf rotary engine were to operate at maximum performance levels, how would its performance compare to that of an engine recognized as a great racing engine?
B. At what level of octane in its fuel does the Habbendorf rotary engine achieve maximum performance?
C. What levels of speed, acceleration, and efficiency must an engine display in order to be considered a “great racing engine”?
D. Could a Habbendorf rotary engine be modified so that it is able to achieve maximum performance with the fuels currently available?
E. If a car equipped with a Habbendorf rotary engine were to race against a comparable car equipped with a great racing engine, by how much would the performance of the great racing engine surpass that of the Habbendorf rotary engine?


GMATNinja abhimahna
I don't agree with tha OA. Could you share your thoughts?
We can't take an imaginary situation to be useful in evaluation in this case. Especially when the problem for not achieving the maximum output is fuel.

Awaiting your reply.

Regards

Posted from my mobile device
_________________

Kudos if my post helps!

Long And A Fruitful Journey - V21 to V41; If I can, So Can You!!
Preparing for RC my way
RC Summary Activity - New Project to imporve RC Skills
Bloomberg's US Bschool Ranking

My study resources:
1. Useful Formulae, Concepts and Tricks-Quant | 2. e-GMAT's ALL SC Compilation | 3. LSAT RC compilation | 4. Actual LSAT CR collection by Broal | 5. QOTD RC (Carcass) | 6. Challange OG RC | 7. GMAT Prep Challenge RC

Manager
Manager
avatar
B
Joined: 07 Jun 2015
Posts: 71
WE: Design (Aerospace and Defense)
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 24 Nov 2017, 06:13
1
gmatexam439 This is what i understand from the question.

The argument runs on two grounds, viz one on the theoretical and other on the practical side.It is already mentioned in the argument that the engine is practically not so great since it has got issue with the octane number of the fuel.So there nothing much to be discussed about the practical aspects {because we already know why practically it is not a great engine} and now we are left with only one question .........."whether theoretically it is a great engine or not?". For that we need to assume our engine working under the ideal condition, that is the engine working on the fuel with ideal octane number and then compare the engine's performance with other great engine.
BSchool Forum Moderator
User avatar
V
Joined: 28 Mar 2017
Posts: 1219
Location: India
GMAT 1: 730 Q49 V41
GPA: 4
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 24 Nov 2017, 08:02
pkm9995109794 wrote:
gmatexam439 This is what i understand from the question.

The argument runs on two grounds, viz one on the theoretical and other on the practical side.It is already mentioned in the argument that the engine is practically not so great since it has got issue with the octane number of the fuel.So there nothing much to be discussed about the practical aspects {because we already know why practically it is not a great engine} and now we are left with only one question .........."whether theoretically it is a great engine or not?". For that we need to assume our engine working under the ideal condition, that is the engine working on the fuel with ideal octane number and then compare the engine's performance with other great engine.


Hi pkm9995109794,

This is somehow making sense to me. Based on your explanation "A" does fit the bill correctly.

Thank you for the post.

Regards
_________________

Kudos if my post helps!

Long And A Fruitful Journey - V21 to V41; If I can, So Can You!!
Preparing for RC my way
RC Summary Activity - New Project to imporve RC Skills
Bloomberg's US Bschool Ranking

My study resources:
1. Useful Formulae, Concepts and Tricks-Quant | 2. e-GMAT's ALL SC Compilation | 3. LSAT RC compilation | 4. Actual LSAT CR collection by Broal | 5. QOTD RC (Carcass) | 6. Challange OG RC | 7. GMAT Prep Challenge RC

Manager
Manager
User avatar
S
Joined: 21 Jul 2017
Posts: 192
Location: India
Concentration: Social Entrepreneurship, Leadership
GMAT 1: 660 Q47 V34
GPA: 4
WE: Project Management (Education)
Premium Member Reviews Badge
Re: In theory, the Habbendorf rotary engine could be a great racing engine  [#permalink]

Show Tags

New post 10 Apr 2018, 11:00
The fuels do not get maximum performance from the engine, thus the engine is not great.


Using POE:

E. Incorrect. It really has nothing to do with the reasoning and knowing how much it might lose by also gives no help. Two engines could be great, but one still has to perform better.

D. Incorrect. How to make the engine better does not matter in how it performs now.

C. Incorrect. Again this really does not address the issue. It might give us a baseline for some (not necessarily all) performance indicators, but the argument here is that the fuel does not get max performance. We also have no idea what performance the engine currently gets.

B. Incorrect. This lets us know what fuel is needed but doesn't tackle the question of what is the problem with the fuel now.

A. Correct.
GMAT Club Bot
Re: In theory, the Habbendorf rotary engine could be a great racing engine &nbs [#permalink] 10 Apr 2018, 11:00
Display posts from previous: Sort by

In theory, the Habbendorf rotary engine could be a great racing engine

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.